Thunder Monster Baffles for pipes with an inside diameter of 2" and outside diameter of 2 1/8".
NOTE:Part # 2001 will not fit the Vance & Hines Big Radius 2 into 2 on a Harley-Davidson.Part # 2002 is specific to the Vance & Hines Big Radius 2 into 2.Please call for sizing of other radius/curved exhaust.